diff --git a/ethers.nimble b/ethers.nimble
index c8bbf3a..c88167f 100644
--- a/ethers.nimble
+++ b/ethers.nimble
@@ -5,7 +5,7 @@ license = "MIT"
 
 requires "nim >= 1.6.0"
 requires "chronicles >= 0.10.3 & < 0.11.0"
-requires "chronos#f0a2d4df61302d24baa6c0f1c257f92045c9ee57"
+requires "chronos >= 4.0.0 & < 4.1.0"
 requires "contractabi >= 0.6.0 & < 0.7.0"
 requires "questionable >= 0.10.2 & < 0.11.0"
 requires "json_rpc >= 0.3.0 & < 0.4.0"